Table 6.3   Abundances of dominant infauna (species comprising > 3% total individuals) and total infaunal abundances at NAV.
                    Abundances are mean number per grab (n=5).

Winter Sampling

Jan 1996

Dec 1996

Jan 1997

Feb 1997

Jan 1998

Oligochaeta – 23

Oligochaeta – 120.4

Oligochaeta – 202.5

Oligochaeta – 35.0

Maranzellaria viridis – 143.3

Tanypodinae – 4.6

Procladius sp. – 13.1

Maranzellaria viridis – 9.1

Procladius sp. – 10.0

Oligochaeta – 23.1

Spionidae sp. – 4.4

Polypedilum sp. – 7.0

Procladius sp. – 7.7

Polypedilum sp. – 6.0

Total Infauna – 176.2

Chironomidae – 1.4

Total Infauna – 175

Total Infauna – 233.8

Ostracoda – 3.7

Diamesinea – 1.4

Total Infauna – 56.3

Total Infauna – 36.8

Spring Sampling

Summer Sampling

Mar 1996

Apr 1997

Aug 1996

Sep 1997

Aug 1998

Oligochaeta – 56.8

Oligochaeta – 113.7

Oligochaeta – 39.8

Oligochaeta – 67.2

Oligochaeta – 8.2

Maranzellaria viridis – 28.6

Gastropoda – 23.8

Procladius sp. – 1.6

Total Infauna – 69.2

Mediomastus spp. – 0.8

Procladius sp. – 8.4

Coelotanypus sp. – 6.4

Polypedilum sp. – 1.4

Mediomastus ambiseta – 0.4

Polypedilum sp. – 7.4

Gammarus sp. – 6.2

Total Infauna – 43.2

Total Infauna – 10.0

Total Infauna – 112.6

Total Infauna – 164.0

Summer (cont.)

Fall Sampling

Sep 1998

Oct 1996

Oct 1998

Oligochaeta – 2.2

Oligochaeta – 44.0

Oligochaeta – 12.8

Procladius sp. – 0.8

Procladius sp. – 8.0

Total Infauna – 13.6

Bezzia palpomyia – 0.2

Tanypodinae sp. – 2.6

Total Infauna – 3.2

Polypedilum sp. – 2.0

Total Infauna – 61